It depends on you really. &nbsp;If you don't mind nurbs surfaces in Max, then save as an IGES file using the MAX3.0 &nbsp;exporter. &nbsp;That will keep all your nurbs surfaces (though I think Max3 didn't support trimmed surfaces). &nbsp;

OR

You can go for the more classic, often overlooked, 3DS format. &nbsp;It may mean your model won't have millions of polys but do you really want it too? &nbsp;:)